linux-ext4 - Re: [PATCH] fs: i_version mntopt gets visible through /proc/mounts

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Date:   Wed, 17 Jun 2020 01:03:14 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Masayoshi Mizuma <msys.mizuma@...il.com>
Cc:     Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Masayoshi Mizuma <m.mizuma@...fujitsu.com>,
        linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] fs: i_version mntopt gets visible through /proc/mounts

On Tue, Jun 16, 2020 at 04:21:23PM -0400, Masayoshi Mizuma wrote:
> From: Masayoshi Mizuma <m.mizuma@...fujitsu.com>
> 
> /proc/mounts doesn't show 'i_version' even if iversion
> mount option is set to XFS.
> 
> iversion mount option is a VFS option, not ext4 specific option.
> Move the handler to show_sb_opts() so that /proc/mounts can show
> 'i_version' on not only ext4 but also the other filesystem.

SB_I_VERSION is a kernel internal flag.  XFS doesn't have an i_version
mount option.